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Ansible Automation Development
Agentless configuration management that brings servers to a known state from versioned playbooks, and keeps them there.
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What Ansible is
Ansible is a configuration management and automation tool. You describe the desired state of machines in YAML playbooks and roles, and Ansible connects over SSH, with no agent installed, to bring each host to that state.
It sits in a different place from Terraform. Terraform creates infrastructure; Ansible configures what runs on it, such as packages, services, users and files. Many setups use both, with Terraform provisioning a server and Ansible configuring it.
We take on Ansible work per engagement, typically for virtual machines and bare metal. It is not part of the stack we run for our own projects.
Suitability
And when it is not. Choosing the wrong tool costs more than any implementation detail.
Good fit for
- Fleets of long-lived virtual machines or physical servers that need consistent configuration
- Teams replacing hand-run shell scripts and runbooks with something reviewable and repeatable
- Network devices or systems where installing an agent is not an option
- Orchestrating multi-step operations, such as rolling updates across a set of hosts in order
Consider alternatives for
- Container-first platforms where the image is the unit of configuration and hosts are disposable
- Pure cloud provisioning with no host configuration, where Terraform alone does the job
- Very large fleets with strict convergence requirements, where a pull-based tool with an agent may scale better
In practice
01
Server baseline and hardening
Users, packages, SSH settings, firewall rules and logging applied the same way to every host, with the playbook as the record of what is deployed.
02
Application deployment on VMs
Ordered rollouts with health checks between steps for applications that are not containerised.
03
Pairing with Terraform
Terraform provisions the machines; Ansible configures them, with inventory generated from Terraform outputs so the two never drift apart.
Considerations
Practical notes from running this in production.
- 01
Idempotency is a property of how you write the tasks, not of the tool. A raw shell or command task runs every time and can change things on every run unless it is guarded.
- 02
Check mode and diff mode are only as reliable as the modules behind them. Test playbooks on a disposable host before trusting a dry run.
- 03
Roles grow into tangled variable precedence. Keep variable layers few and document where each value is meant to come from.
- 04
Secrets belong in a vault or an external store, never in plain inventory files committed to the repository.
FAQ
Ansible or Terraform?
They solve different problems. Terraform creates and changes infrastructure resources; Ansible configures the software and settings on machines. A common pattern is to use both rather than choose.
Is Ansible still relevant if we use containers?
Less so for the application itself, since the image carries its configuration. It still earns its place for the hosts underneath, for build servers, and for anything that is not containerised.
Is Ansible part of your own stack?
No. We take it on per engagement. We will confirm during scoping that your use case is one we can deliver well.
How long does a Ansible development project take?
It depends on scope. A focused first release is usually weeks rather than months, while larger platforms are delivered in phases. We give a written estimate after a short discovery conversation and agree milestones before work starts.
How is Ansible development work priced?
We work either to a fixed scope with agreed milestones or on a time-and-materials basis, whichever suits how well the requirements are known. You receive the estimate and its assumptions in writing before committing.
By industry
Where we apply Ansible. Tiles marked "Guide" open a dedicated write-up; the rest open the industry page.
Let’s talk about your Ansible project
Tell us what you are trying to build or fix. We will come back with scope, approach and an honest view on cost and timeline.